Folder



1m 11, 1940. J. H. Ma as 2.204.095

.ro mm and Jan. 13, 1940 INVENTOR Patented June 11,1940

John H. McLaren, New york, N. Y. Application January 13, 1940, Serial No. 313,655 I 8 Claims.

This invention relates to folders of the type in which sheets of cardboard or pressed paper board or press board are connected by a flexible connector.

The sheets are usually connected by a fabric strip or strips with the longitudinal axis of the connecting strip parallel to the threads, warp or a flexible connector of the character specified weft, of the fabric. When one of the sheets is pulled or twisted relative to the other the fabric rips.

This invention has for its salient object to provide a flexible connector of the characterdescrlbed that will have a longer wear than the usual connector and in' which the liability to rip or tear has been reduced to a minimum.

Another object of the invention is to provide that will cover the adjacent edges of both faces of the sheets and will overlap but, will have a.

single thicknessat the edges.

Another object of the invention is to provide adjacent connected edges of the sheets so constructed and arranged as to prevent abutting engagement with the edges of the connector.

Further objects of the invention will appear from the following specification taken in connection with the drawing which forms a part of this application, and in which I Fig. 1 is a perspective view of afolder constructed in accordance with the invention;

Fig. 2 is a plan view of the inside of a portion of the adjacent edges of the connected sheets and the connecting strip, before the strip has been folded around the ,bottoms of the edges of the sheets and secured thereto.

'Fig. 3 is a view similar to Fig. 2 but showing the strip folded around the bottom and connected to the edges; 1

Figs. 4 and 5 are sectional elevations taken substantially on lines 4-4 and 5-5 of Fig. 2.

In the particular embodiment of the invention illustrated, there is shown a pair of sheets and I I of paper board which are connected by a flexi ble-fabric connector I 3. The connector may, if desired, have a v-shaped bend or bellows type fold therein.

The connector is formed of a strip ll of fabric material, the strip being biased or, in other words, having the threads thereof disposed on a bias with respect to the inner edges of the sheets in and II and the-longitudinal axis of the fold. The strip is secured preferably-in the manner illustrated in Figs. 2 and 3 with the two ends disposed on the inside of the connector. One end I is secured at its edges to the inner surfaces of the adjacent edges of the sheets II) and- H and the strip is carried around the upper edgesof the sheets and downwardly along the outer surfaces, being secured thereto and extending below the lower edge, as shown in Fig. '2. The two ends. 5 of the strip are preferably cut on an angle and the strip is of such a length that the outer edge shown at I6 will'meet the outer edge shown at I!- when the downwardly extending portion of the strip is folded back and secured to the inner' adjacent faces of the sheets I0 and II, as shown in Fig. 3. Moreover, the edge I 8 meets the edge 1.9. in a similar manner. The portions of the strip between the edges I 6 and I 8 and I1 and I9 overlap, as shown at in Fig. 3. I v 15 This particular arrangement is, used since the meeting outer edges of the strip will have a single thickness instead of a double thickness, which would be the case if the ends of the strip overlapped for their entire width.

' In order to prevent sheets of paper or other material carried in the folder from abutting against and engaging the outer edges 2| and 22 of the connecting strip the inner edge portions of the sheets I I) and H are provided with projec- 25 tions or projecting portions 25 which extendoutwardly from the outer faces and 26 which extend inwardly from the inner faces of the sheets, This construction is illustrated particularly in Figs. 4. and 5. 4 30 Since the strip is a bias material any tendency to tear or rip will bejminimized, whereas with the ordinary strip connectors in which the strip is arranged with the warp or weft threads parallelwith the axis or line of fold, the material is easily ripped. I

Although one specific embodiment of the invention has been particularly shown and described it will be understood that the invention is capable of modification and that changes in 40 the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit and scope of the invention, as expressed in the following claims.

What I claim is:

1. In combination, a pair of sheets of relatively stiff material and a connecting strip of flexible woven material secured at its edges to adjacent edges of-the sheets, said flexible strip being disposed with its threads bias to the connected edges of the sheets. l v

2. In combination, a pair of sheets of relatively stiff material and a connecting strip of double thickness, flexible woven material secured at its edges to adjacent edges of the sheets, said flexible woven material secured at its edges to adjacent edges of the sheets, said flexible strip being disposed with its threads bias to the connected edges of the sheets, and being secured at its edges to the adjacent edges of the sheets on one face of the sheets and being folded around 1 the ends ofsaid edges and secured to the adjav cent edges on the other face of the sheets.

5. In combination, a pair of sheets of relative- 1y stiif'material and a connecting strip of flexible woven material secured at its edges to adjacent edges of the sheets, said flexible strip being disposed with its threads bias tothe connected edges of the sheets and being secured at its edges to r the adjacent edges of the sheets on one face of the sheets and being folded around the ends of said edges and secured to the adjacent edges on the other face of the sheets, the ends of the trip overlapping at the central portion thereof but meeting at the edges of the strip.

6. In combination, a pair of sheets of rela-- tively stiff, material and a connecting strip of flexible woven material secured-at its edges to adjacent edges of the sheets, said flexible strip being disposed with its threads ,biasto the connected edges of the sheets, and being secured at its edges to the adjacent edges of the sheets on one face of the sheets and being folded around the ends of said edges and secured to the adjacent edges on the other face of the sheets, the ends of the connector strip being single in thickness" at the outer edges thereof and overlapping each other and being double in thickness'at the overlapping portion inwardly ofthe outer edges.

'7. In combination, a pair of sheets of relatively stiff material and a connecting strip of flexible material extending around the ends of adjacent edges of the sheets and secured at its edges to said adjacent edges on both faces thereof, the body of the sheets adjacent the edges of the connecting strip having raised portions projecting outof the planes of the sheets.

8. In combination, a pair of sheets of rela-' tively stifi material and a connecting strip of flexible material extending around the ends of adjacent edges of the sheets and secured at its edges to said adjacent edges on both faces thereof, the bodj; of the sheets adjacent the edges of the connecting strip having raised portions projecting out of the planesof the sheets, said flexible strip being disposed with its threads bias to the connected edges of .the sheets.

JOHN H. MCLAREN. 

